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《Journal of Disaster Prevention and Mitigation Engineering》 2011-06
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Research on Early Warning of Rainfall-induced Landslides Based on Load-unload Response Ratio Theory

WU Kai~(1,2),SHENG Qian~1,ZHANG Yong-hui~1 (1.State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics, Chinese Academy of Sciences,Wuhan 430071,China; 2.Highway Planning,Survey,Design and Research Institute,Sichuan Provincial Communications Department, Chengdu 610041,China)  
Based on the real-time remote monitoring system of slope,this paper proposes that the daily rainfall and its change can be selected as the loading-unloading dynamical parameter and the average deformation velocity and its change as the dynamical response parameter to establish the short cycle pre-warning model of rainfall-induced landslides.The calculation of loading-unloading response ratio of monitoring points of a mountain highway slope is completed by using the loading-unloading response prediction model. The computation results show that the curves of loading-unloading response ratio of monitoring points agree with the dynamic evolution law of the slope stability.All the above-mentioned results show that the daily rainfall dynamic model of the loading-unloading response ratio can be used to perform the short cycle early warning of the rainfall-induced landslides.
【Fund】: 西部交通建设科技项目(200831878542);; 国家高技术研究发展计划(863)专项课题(2007AA11Z121);; 国家自然科学基金项目(40972202)资助
【CateGory Index】: P642.22
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